This is a section about Proof of the fundamental theorem of calculus!

Proof of the fundamental theorem of calculus is a very important subject about which there is a lot to say.

For example, this sentence. And then another one.

This is a section about Proof of the fundamental theorem of calculus!

Proof of the fundamental theorem of calculus is a very important subject about which there is a lot to say.

For example, this sentence. And then another one.